How many of these unusual white grape varieties do you know?

We are all familiar with the usual suspects such as Chardonnay, Sauvignon Blanc and Pinot Grigio, but consider that there are thousands of different grape varieties and it soon becomes apparent that there is a whole world to explore outside of our comfort zone.

Here are five unusual white grape varieties worth tracking down.

If you are the type of person who loves to discover exciting new wines, this list is a great place to start.